Author Topic: What is the correct coil for my COPO  (Read 11254 times)

jg4now

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What is the correct coil for my COPO
« on: November 02, 2008, 03:20:14 AM »
I am restoring a 1969 COPO.  One of the missing components is the coil.  I've look through the assembly manual and the parts manual and have researched other books only to be disappointed because I didn't find the answer.  Does anyone know which coil is correct, the 270 or the 293?

Thanks!

big iron

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Re: What is the correct coil for my COPO
« Reply #1 on: November 03, 2008, 01:50:21 PM »
What engine and model 69 COPO are we talking about ?
What distributor do you have, point or TI ( alu. or cast iron ) ?
Bob

jg4now

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Re: What is the correct coil for my COPO
« Reply #2 on: November 03, 2008, 04:41:01 PM »
Hi Bob,

Thanks for the reply.

The car is a 9561 MN COPO, which is the 427 CI engine with the M-22 4-speed trtansmission. 
The distributor is aluminum with points. 



Jim

big iron

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Re: What is the correct coil for my COPO
« Reply #3 on: November 03, 2008, 07:51:14 PM »
 Jim,

The distributor you should use is 1111499 with 1115355 vac. advance can and the coil should be 1115238 stamped 238 BR.
Make sure you use the correct dist. or timing curve will be incorrect!
Hope this helps?

Bob

jg4now

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Re: What is the correct coil for my COPO
« Reply #4 on: November 03, 2008, 09:22:56 PM »
Thanks Bob.

Where did you find this information?  It may be helpful for me later to get additional help.

Thanks again,

Jim

big iron

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Re: What is the correct coil for my COPO
« Reply #5 on: November 04, 2008, 03:55:27 AM »
Jim,
The coil and bracket are an engine assembly, so the 69 AIM would be of little help.
In this case I used the Chevy By The Numbers and the GM 69 P&A (rev 10-1-69). The CBTN on page 242 shows the 1111499 dist. used on the 69 396 & 427. To verify this I used the 69 P&A 2.361 page 2-24.
The 69 P&A group 2.170 page 2- 4 shows 3 coils 1115202 (1.8 OHM resistance too high), 1115207 (TI coil), 1115238 (1.3 OHM correct resistance).The 293 number you mentioned is used by Rick"s but I think that is an GM assembly number for the coil and bracket. Look at 298 w/cowl induction and 270 wo/cowl induction in Rick's cat.,now go to the 69 P&A group 2.183 page 2-6. 1966876 w/cowl hood and 1971011 wo/cowl hood. The brackets are different not the coils.
Sorry it took so long to respond be am working on a 67 Camaro and 67 Corvette and they take up a lot of my time.
Bob

jg4now

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Re: What is the correct coil for my COPO
« Reply #6 on: November 04, 2008, 04:12:08 PM »
Bob,

Thanks for the info.  I have the ASM and the 67-70 Master Parts Cat.  I guess I'll get copies of the others.

Hope things go well with the 67's.  Are they both numbers cars?  Rare?

big iron

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Re: What is the correct coil for my COPO
« Reply #7 on: November 04, 2008, 05:10:26 PM »
Try to use P&A's(69)that are as close to the year AIM's (69) as possible. This cuts down on GM part # substitution. Try to get verification from at least 2 references.
Both cars are (will be) drivers and will be shown. I have taken some latitude with some of the RPO"s ( 7 blade fans etc.), gets hot here in FL.
Bob

ko-lek-tor

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Re: What is the correct coil for my COPO
« Reply #8 on: July 04, 2018, 01:49:09 PM »
Old thread revive. So a friend recently found and bought a copo. It spent its early life as a drag car (no surprise). It has absolutely not one component of its drivetrain that is original to the car. My friend is trying to get this car back to semi correct drive train. So he comes down the other day with a shopping list of parts. He asked me what was the correct coil? I tell him that I believe the 293 coil is correct. To make sure I look it up. But I am unable to find a definitive answer. I can’t remember where I got the idea a 293 was correct? In fact, I don’t see any threads, other than this, that discuss this topic. And this thread leaves the reader wondering and not answering to at least my satisfaction. So, what is the correct coil for a L72 copo please?
Bentley to friends :1969 SS/RS 396 owned 79
1969 SS 350 (sold)
1969 D.H.COPO replica 4spd. owned since 85
1967 302 4 spd 5.13

ZLP955

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Re: What is the correct coil for my COPO
« Reply #9 on: July 05, 2018, 12:46:25 PM »
Bentley by coincidence I was searching over at sYc just now for Sun tune-up sheets for a 302, and happened to find a 2015 post where Jason (SuperNovaSS) had posted pictures of one for a 1969 427/425hp - which lists the ignition coil. However it appears to be 1115290? Can't recall ever seeing one before, wonder if it may be a typo? No idea if these sheets are 100% accurate......
Link with photos here: https://www.yenko.net/forum/showthread.php?t=134948
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway

william

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Re: What is the correct coil for my COPO
« Reply #10 on: July 06, 2018, 12:25:21 AM »
So, what is the correct coil for a L72 copo please?

Most BBs in the CRG db have a 293 B-R coil.
« Last Edit: July 06, 2018, 11:24:25 AM by william »
Learning more and more about less and less...

bcmiller

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Re: What is the correct coil for my COPO
« Reply #11 on: July 06, 2018, 01:27:34 PM »
I have most of the Sun tune up sheets from 1968.
Bryon / 1968 Camaro SS 396 coupe - now old school 468 big block
1967 Camaro RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016

HOT3O2

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Re: What is the correct coil for my COPO
« Reply #12 on: July 06, 2018, 02:27:28 PM »
Tim,  I have the 1969 302 Sun Tune Up sheet if you need a copy.

Rick
Rick
69 RS/Z28

ZLP955

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Re: What is the correct coil for my COPO
« Reply #13 on: July 06, 2018, 10:33:02 PM »
Rick - thank you, I'll PM you to avoid muddling up this thread.
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway

Opium Motors

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Re: What is the correct coil for my COPO
« Reply #14 on: August 01, 2018, 05:17:38 AM »
Thanks Bob.

Where did you find this information?  It may be helpful for me later to get additional help.

Thanks again,

Jim

I got the same information, which is pretty simple.

1967-1974 1115238. Stamped 238 BR for V-8
1967-1974 1115202 Stamped 202 -12V for all but V-8

This info comes from Chiltons Labor Guide and Parts Manual 1974 45th year
This book tells the amount of time required to repair a car as well as all the part numbers so the mechanic can walk over to the parts counter and get the right part. Great Resourse.
1968 Camaro RS Convertible 327 4 Speed Corvette Bronze
1973 Corvette 454